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HealthyPhase 4NCT01920802

Assessment and Comparison of Metabolic Changes in Non-psychotic Adults Taking Iloperidone or Olanzapine or Placebo

A Phase 4 study testing olanzapine and iloperidone in people with Healthy, run by New York State Psychiatric Institute at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this pilot randomized clinical trial is to begin to delineate the pathophysiological changes associated with antipsychotic associated metabolic side effects. The study will be performed in 36 healthy people between the ages of 18 and 30, who have never taken an antipsychotic, will undergo baseline… Read more about this study

Who is it for?
Ages 18 to 35 yearsHealthy volunteers can take part
Conditions the study is for
Healthy
What is being tested?
olanzapine and iloperidone
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
31 participants
Where
1 siteUnited States
Study dates
Nov 2012to Sep 2014
Phase
Phase 4
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 35 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Male or female between the ages of 18-35 with no history of any Axis-I diagnosis
  • Does not meet criteria for substance abuse or dependence in the past six months
  • Female subjects will use barrier-method, non-hormonal contraception
  • Capacity to understand all the relevant risks and potential benefits of the study (informed consent)
  • Must be able to speak and read English

Who cannot join

  • Current or past Axis I psychiatric diagnosis, including alcohol or substance abuse or dependence (except nicotine or caffeine), but not including minor Axis I disorders (e.g. simple phobia)
  • Lifetime use of psychotropic medications, including antipsychotics, antidepressants, mood stabilizers, and anxiolytics
  • Presence or history of medical or neurological illness that, in the judgment of the investigator, could influence the results of the study
  • Diagnosis of diabetes, hemoglobin A1C > 6.5, hypertension, or dyslipidemias, or elevated random or fasting glucose, abnormal lipid levels, BP 130/85
  • BMI 25 or < 19, history of BMI >35, and/or waist circumference >35 inches for females, 40 inches for males
  • Subjects who are pregnant or breast-feeding or planning to become pregnant during the study
Show all 19Show fewer
  • Acute suicidality
  • Meets criteria for a Diagnostic and Statistical Manual, Version 4 (DSM-IV) defined eating disorder
  • Use of, or clinical indication for, one or more of the following medications: lithium, anti-epileptic medication, steroids (oral or inhaled), stimulants, serotonin reuptake inhibitors, mirtazapine, tricyclic antidepressants, thyroid supplementation, sibutramine, metformin, thiazolidinediones, beta-blockers, clonidine, niacin
  • Subjects who have had >10% change in their body weight within the three months prior to enrollment
  • HIV positive subjects
  • Presence of mental retardation or pervasive developmental disorder
  • History of recent (within 6 months) significant self-injurious behavior or violence
  • Daily multivitamin or B-complex vitamin use
  • A known history of dieting and difficulty with weight loss
  • A strong family history of diabetes and/or heart disease
  • History of congenital long QT syndrome or prolonged corrected QT interval (QTc) on screening EKG (>450ms)
  • Concomitant use of any medication that inhibits 2D6 or 3A4 metabolism
  • Low serum potassium or magnesium

Trial locations and contacts

1 site in 1 country.

United States1 site
  • New York State Psychiatric Institute

    New York, New York, 10032

Other trials in United States

About this study

Official title: Quantitative Assessment and Comparison of Metabolic Changes in Non-psychotic Adults Taking the Antipsychotic Medications Fanapt (Iloperidone) or Zyprexa (Olanzapine) or Placebo

The purpose of this pilot randomized clinical trial is to begin to delineate the pathophysiological changes associated with antipsychotic associated metabolic side effects. The study will be performed in 36 healthy people between the ages of 18 and 30, who have never taken an antipsychotic, will undergo baseline laboratory tests before being randomized to 5mg BID of olanzapine or 6mg BID of iloperidone or placebo to take for up to 4 weeks. The primary outcome measure will be a correlation of early changes in leptin with weight gain. We will also record changes in food intake, resting metabolic rate, oral glucose tolerance and fasting insulin and glucose levels, lipids and inflammation markers. Subjects will be followed closely to monitor for safety throughout the 4-week study and will be discontinued if there is a medically significant change in metabolic status or other antipsychotic side effects. Metabolic assessments will be performed again at the time of discontinuation or at the end of an 4-week period, and change from baseline in the two treatment groups will be compared.

Read the detailed description

Study hypotheses:

  1. Early changes (baseline vs day 3) in leptin will correlate with later changes in weight (at study termination.)
  2. Olanzapine will cause the greatest increase in calorie consumption from baseline on the multi-item meal compared with iloperidone or placebo.
  3. Olanzapine subjects will report the greatest frequency/quantity of eating in food diaries, and report increased preference for calorically dense foods (ie, higher fat content) compared to iloperidone or placebo.
  4. Early markers of endocrine changes caused by olanzapine will be greater than those caused by iloperidone or placebo, and these early changes will correlate with weight gain.
  5. Olanzapine will have greater effects on glucose homeostasis than iloperidone or placebo, and these effects will be separate from effects on body weight and composition.
  6. Early signs of metabolic disturbance, including glucose intolerance (greater excursion on OGTT) and insulin resistance (higher plasma insulin) will precede any significant weight gain.
  7. Early evidence of glucose intolerance and/or insulin resistance will predict greater metabolic derangements with further dosing of olanzapine, as evidenced by exacerbated glucose intolerance on OGTT or higher plasma glucose/insulin levels. These effects may not necessarily parallel weight gain.
  8. Olanzapine will be associated with greater markers of inflammation than iloperidone or placebo.
Conditions
Healthy
Being tested
olanzapine, iloperidone, Placebo

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • olanzapineDrug

    Also called Zyprexa

    5mg BID up to 4 weeks

  • iloperidoneDrug

    Also called Fanapt

    6 mg BID up to 4 weeks

  • PlaceboDrug

    BID up to 4 weeks

Study groups in NCT01920802
Study groupRoleWhat they receive
olanzapineExperimental5mg BID olanzapine for up to 4 weeks
Receives: Drug: olanzapine
iloperidoneExperimental6mg BID iloperidone up to 4 weeks
Receives: Drug: iloperidone
placeboPlacebo comparatorBID placebo up to 4 weeks
Receives: Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in Body Weight

    Delineate a pathophysiological mechanism of antipsychotic induced weight gain

    Measured: baseline and 6 week visit

  2. Change in Adiposity

    Total fat mass (excluding head) from baseline to Day 28

    Measured: Baseline to Day 28

Secondary outcomes (1)
  1. Change in Leptin

    Leptin levels measured at Day 3 compared to baseline

    Measured: change in baseline to Day 3

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted12 Aug 2013 (estimated)
  2. Study startNov 2012
  3. Primary completionAug 2014
  4. Study completionSep 2014

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Triple blind
Who is masked
Participant, Investigator, Outcomes assessor
Enrolment
31 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01920802
Sponsor's protocol ID
6525
Status last verified
Jan 2017
First submitted
8 Aug 2013
Last updated
20 Mar 2017
Data monitoring committee
No

Publications

  • Ballon JS, Pajvani UB, Mayer LE, Freyberg Z, Freyberg R, Contreras I, Rosenbaum M, Leibel RL, Lieberman JA. Pathophysiology of drug induced weight and metabolic effects: findings from an RCT in healthy volunteers treated with olanzapine, iloperidone, or placebo. J Psychopharmacol. 2018 May;32(5):533-540. doi: 10.1177/0269881118754708. Epub 2018 Feb 15.

    PubMed 29444618

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing olanzapine and iloperidone in people with Healthy, run by New York State Psychiatric Institute at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 19 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 20 Mar 2017. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 20 Mar 2017). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in Body Weight (time frame: baseline and 6 week visit). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01920802, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 20 Mar 2017.

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